package cn.com.infohold.smartcity.data;

import android.content.Context;
import android.os.Environment;

import java.io.File;
import java.math.BigDecimal;

import common.utils.FileUtils;
import library.utils.Logger;

public class  DataManager {

    public static String getTotalCacheSize(Context context) {
        try {
            long cacheSize = getFolderSize(context.getCacheDir());
            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
                cacheSize += getFolderSize(context.getExternalCacheDir());
            }
            return getFormatSize(cacheSize);
        } catch (Exception e) {
            Logger.debug(e);
        }
        return null;
    }


    public void cleanInternalCache(Context context) {
        FileUtils.deleteFile(context.getCacheDir());
    }

    public void cleanDatabases(Context context) {
        FileUtils.deleteFile(new File("/data/data/"
                + context.getPackageName() + "/databases"));
    }

    public void cleanSharedPreference(Context context) {
        XmlConfig.getInstance().clean();
        XmlData.getInstance().clean();
        FileUtils.deleteFile(new File("/data/data/"
                + context.getPackageName() + "/shared_prefs"));
    }

    public void cleanDatabaseByName(Context context, String dbName) {
        context.deleteDatabase(dbName);
    }

    public void cleanFiles(Context context) {
        FileUtils.deleteFile(context.getFilesDir());
    }

    public void cleanExternalCache(Context context) {
        if (Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED)) {
            FileUtils.deleteFile(context.getExternalCacheDir());
        }
    }


    public void cleanApplicationData(Context context) {
        cleanInternalCache(context);
        cleanExternalCache(context);
//        DaoManager.clean();
//        cleanDatabases(context);
        cleanSharedPreference(context);
        cleanFiles(context);
    }


    //****************************************************************
    // 获取文件
    //Context.getExternalFilesDir() --> SDCard/Android/data/你的应用的包名/files/ 目录，一般放一些长时间保存的数据
    //Context.getExternalCacheDir() --> SDCard/Android/data/你的应用包名/cache/目录，一般存放临时缓存数据
    public static long getFolderSize(File file) throws Exception {
        long size = 0;
        try {
            File[] fileList = file.listFiles();
            for (int i = 0; i < fileList.length; i++) {
                // 如果下面还有文件
                if (fileList[i].isDirectory()) {
                    size = size + getFolderSize(fileList[i]);
                } else {
                    size = size + fileList[i].length();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return size;
    }

    /**
     * 格式化单位
     *
     * @param size
     */
    public static String getFormatSize(double size) {
        double kiloByte = size / 1024;
        if (kiloByte < 1) {
            return size + "Byte";
        }

        double megaByte = kiloByte / 1024;
        if (megaByte < 1) {
            BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));
            return result1.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "KB";
        }

        double gigaByte = megaByte / 1024;
        if (gigaByte < 1) {
            BigDecimal result2 = new BigDecimal(Double.toString(megaByte));
            return result2.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "MB";
        }

        double teraBytes = gigaByte / 1024;
        if (teraBytes < 1) {
            BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));
            return result3.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "GB";
        }
        BigDecimal result4 = new BigDecimal(teraBytes);
        return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString()
                + "TB";
    }
}